e6_9.asm

ZHUYAO ZSHI LAI JIECHUADE LAIDE

stack segment stack
      db 256 dup(?)
stack ends
data segment
     str1 db 'Branche1','$'
     str2 db 'Branche2','$'
     str3 db 'Branche3','$'
     str4 db 'Branche4','$'
     err  db 'Error','$'
data ends
code segment
     assume cs:code,ds:data,ss:stack
star:mov ax,data
     mov ds,ax
Aga: mov ah,01h
     int 21h
     cmp al,31h
     je  A1
     cmp al,32h
     je  A2
     cmp al,33h
     je  A3
     cmp al,34h
     je  A4
     mov dx,offset err
     mov ah,9
     int 21h
     jmp Fins
A1:  mov dx,offset str1
     mov ah,9
     int 21h
     jmp Ente
A2:  mov dx,offset str2
     mov ah,9
     int 21h
     jmp Ente
A3:  mov dx,offset str3
     mov ah,9
     int 21h
     jmp Ente
A4:  mov dx,offset str4
     mov ah,9
     int 21h
Ente:mov dl,0dh
     mov ah,2
     int 21h
     mov dl,0ah
     mov ah,2
     int 21h
     jmp Aga
Fins:mov ah,4ch
     int 21h
code ends
     end star